If a is 50% larger than c and b is 25% larger than c, then a is

Question

what percent larger than b?
(a) 20% (b) 25% (c) 50% (d) 100% (e) 200%

Answer 1

a = 1.5c or c = a/1.5
b = 1.25c or c = b/1.25

therefore a/1.5 = b/1.25
a = 1.5b/1.25
a = 1.2b
So a is 20% bigger than b